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The Sauna Life

ThermaSol PRO Series I Essential Steam Shower Generator w/Fast Start - 6kW, 8kW, 10kW, 11kW

ThermaSol PRO Series I Essential Steam Shower Generator w/Fast Start - 6kW, 8kW, 10kW, 11kW


Regular price $2,825.00
Regular price Sale price $2,825.00
Sale Temporarily Out of Stock

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ThermaSol PRO Series I Essential Steam Shower Generator w/Fast Start - 6kW, 8kW, 10kW, 11kW

The all-new ThermaSol PROI-84 is engineered for home steam rooms with dimensions measuring up to 84 adjusted cubic feet (ACF). The PROI-84 6kW steam bath generator accepts voltage in the range of 208V-240V, single-phase (1-PH) configuration.

ThermaSol Pro I Series generators are designed to provide years of dependable, maintenance-free operation. The PROI-84 is constructed of corrosion-resistant stainless-steel throughout and includes professional-quality heating elements.

The PROI-84 steam shower unit provides a consistent home steam spa experience by generating steam at a constant rate with state-of-the-art efficiency technology. The unit includes the innovative Fast Start feature for quicker heat-up times.

The generator's split tank design enhances the longevity of the unit by separating the heating function from the water feed function. The PROI-84 features intelligent CAN Bus technology for reliable two-way communication between the generator and control.

The PROI-84 is compatible with the Thermatouch, Signatouch, Microtouch, Signature Control, Easy Start, Wellness Package, and Digital Shower Package. Select the available control or control package with features that best suits your bathing preferences.

The PROI-84 steam bath generator can be paired with the Serenity Light and Music Series, Hydrovive Series, and other ThermaSol steam shower accessories.

Pro I Series generators can be installed up to fifty feet away from your steam shower enclosure. Typical installation locations include closets, cabinet vanities, climate-controlled attics, and basements.

The PROI-84 generator carries ThermaSol's limited lifetime warranty and is fully serviceable. All ThermaSol steam units are UL and CSA listed for your safety.

Note: Generators sizing are listed based on Thermasol's theory on "Simple Sizing" of Cubic Feet = Length X Width X Height. No adjustments for materials.


  • Constant steam flow
  • Constant steam rate
  • No steam lag
  • No steam burst
  • FastStart Technology (exclusive) - steam in seconds, not minutes
  • Works with HydroVive and Serenity systems
  • Two way digital CAN-bus Technology (exclusive)
  • Split Tank longevity through design
  • 240V/1PH operation
  • For steam rooms up to 84 adj. cu. ft.
  • Superior heating elements-Incoloy low watt density
  • Stainless Steel construction
  • Designed, engineered, and crafted in the U.S.A
  • Dimensions: 18" L x 23"W x 14" H
  • Lifetime Warranty


                          • 6kW Steam generator
                          • In-line water screen kit
                          • Steamhead housing installation tool
                          • Steamhead housing and cable kit
                          • 208-240 volt power cord (5ft)
                          • 50' CAN-bus cable for the controller
                          • Installation instructions
                          • Static cling warning label
                          • Warranty



                          ThermaSol PROI-84:

                          Model PROI-84
                          Kilowatt Rating 6 kW
                          Maximum Cubic Feet 84 FT
                          Amperage 28
                          Heater Weight 40 lbs
                          Water Inlet 3/8" NPT
                          Steam Outlet 1/2" NPT
                          Safety Valve 3/4" NPT
                          Electrical Connection NEMA 6-30P
                          Width 18"
                          Depth 23"
                          Height 14"


                          ThermaSol PROI-140:

                          Model PROI-140
                          Kilowatt Rating 8 kW
                          Maximum Cubic Feet 140 FT
                          Amperage 37
                          Heater Weight 40 lbs
                          Water Inlet 3/8" NPT
                          Steam Outlet 1/2" NPT
                          Safety Valve 3/4" NPT
                          Electrical Connection NEMA 6-50P
                          Width 18"
                          Depth 23"
                          Height 14"

                          ThermaSol PROI-240:

                          Model PROI-240
                          Kilowatt Rating 10 kW
                          Maximum Cubic Feet 240 FT
                          Amperage 46
                          Heater Weight 40 lbs
                          Water Inlet 3/8" NPT
                          Steam Outlet 1/2" NPT
                          Safety Valve 3/4" NPT
                          Electrical Connection NEMA 6-50P
                          Width 18"
                          Depth 23"
                          Height 14"

                          ThermaSol PROI-395:

                          Model PROI-395
                          Kilowatt Rating 11 kW
                          Maximum Cubic Feet 395 FT
                          Amperage 46
                          Heater Weight 40 lbs
                          Water Inlet 3/8" NPT
                          Steam Outlet 1/2" NPT
                          Safety Valve 3/4" NPT
                          Electrical Connection Hardwired
                          Width 18"
                          Depth 23"


                          Installation and Operational Manual:

                          Installation Manual:

                          PROI Series IOM 2022.pdf

                          Installation Diagram:

                          PROI Series Install Diagram.pdf

                          Spec Sheet:

                           PROI-84 Spec Sheet.pdf

                          PRO Series Overview:



                          Warranty information may vary depending on the manufacturer, so please refer to the individual product pages for details. It's important to note that warranties cover damages that occur over time and from use. If an item arrives damaged and is not reported within 30 days, it is not considered a warranty claim.

                          For any questions, please contact support @

                          Shipping & Returns

                          Cancellation & Refund Policy:

                          At The Home Upgrade, we take pride in offering one of the industry's best return policies. You can cancel your order free of charge at any time before it has shipped, with some exceptions for custom-made orders. For cancellations, please contact us at 469-809-4999 or email support @

                          Cancellations (Before Order Ships):

                          If you need to cancel an order, please contact us as within 24 hours so that we can process a full refund before your order is shipped from the warehouse. You can reach our agents during business hours at (469) 809-4999, through the chat in the bottom right, or by emailing at any time.

                          Cancellations of Custom Orders:

                          Custom or made-to-order products cannot be cancelled or refunded, as these products are specifically produced for your order. These units are custom made according to your specifications or created once you place your order. Your warranty ensures that you receive a fully functional and operational product. If you are unsure whether your order is custom or made-to-order, please message or call us for clarification. All sales are final for custom-made and made-to-order products.

                          Refunds and Returns:

                          If you need to exchange your product, you may do so, but please note that you, as the customer, are responsible for any shipping costs incurred during the returns and exchange process. Please be aware that not all orders are eligible for return once they have shipped, as we source our products directly from manufacturers. Therefore, if the manufacturer does not permit us to return a product, we are unable to offer you a return. This policy may vary on a case-by-case basis, so please reach out to us for specific information regarding your brand and/or product. Due to the increasing costs of LTL/freight shipping, outright returns will be subject to a 25% cancellation fee plus return shipping costs. However, if you are replacing the product with something else, we may be able to assist with covering some of the costs, depending on the product.

                          Shipping Times:

                          We strive to deliver your order as quickly as possible. Estimated shipping times provided on the product pages are based on information from our suppliers and freight companies, but these estimates may change or vary without notice due to factors such as supply chain issues, delays in steel mills, manufacturing delays due to mills, high demand on shipping, factory/warehouse and dock workers, and so on).

                          Order delays are beyond The Home Upgrade's control and have proven to be unavoidable. We understand that this may be frustrating, and we kindly ask for your patience and understanding during these challenging times. We appreciate your business and value your patience.


                          Frequently Asked Questions:

                          When will I know if my order has shipped?

                          Once you place your order, you will receive an order confirmation email. This means that we have received your order and authorized your credit card for the purchase. We immediately check with our suppliers to confirm stock availability for immediate shipment. If your item is on backorder or unavailable, we will void the pre-authorization and notify you by email. If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment. In case of any delay in stock, we will contact you before accepting payment.

                          When will my order be shipped?

                          If your order is in stock and we have processed the charges to your credit card, it will be shipped within 2-5 business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the email address you provided during checkout. If you do not receive tracking information within six business days of your order, please feel free to follow up with us at support@

                          Shipping is limited to the lower 48 states of the USA. For any questions, please email us at support @ or call us at (469) 809-4999.

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